These points are also on the negative side of the x axis, at -pi/4 and -pi/2. When we move along the x axis, notice what happens to the y value. On the left side of zero, tangent is negative. At x=-pi/4, tangent=-1.
The Independent Online. David Cameron may have called a referendum on the EU to blackmail Europe, according to Vladimir Putin. The Russian president also questioned Mr Cameronâs decision to call the vote, as it has caused a âgreat problemâ.
Russian President Vladimir Putin addressed the U.N. General Assembly on Monday and said the West was making an enormous mistake by not cooperating with Syrian President Bashar al-Assad in the fight against the Islamic State militant group. Here is the full text of his remarks.